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Fixing a crash when exiting or re-entering play mode #6296

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Fixing a crash when exiting or re-entering play mode #6296

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c84cc41
Fix crash when exiting play mode
Codengineer May 14, 2026
6274b4c
Adding changelog entry
Codengineer May 14, 2026
3d5d51f
Fixing trailing whitespace
Codengineer May 20, 2026
fdf2dfd
Supressing some warnings
Codengineer May 12, 2026
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1 change: 1 addition & 0 deletions DevProject/Assets/Default.ruleset
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Original file line number Diff line number Diff line change
Expand Up @@ -2,5 +2,6 @@
<RuleSet Name="MLAgents" ToolsVersion="10.0">
<Rules AnalyzerId="Unity.Serialization.Analyzer" RuleNamespace="Unity.Serialization.Analyzer">
<Rule Id="UAC1005" Action="None" />
<Rule Id="UAC1015" Action="None" />
</Rules>
</RuleSet>
1 change: 1 addition & 0 deletions DevProject/Assets/csc.rsp
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@@ -1,3 +1,4 @@
-warnaserror+
-warnaserror-:618
-nowarn:UAC1005
-nowarn:UAC1015
1 change: 1 addition & 0 deletions Project/Assets/Default.ruleset
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Original file line number Diff line number Diff line change
Expand Up @@ -2,5 +2,6 @@
<RuleSet Name="MLAgents" ToolsVersion="10.0">
<Rules AnalyzerId="Unity.Serialization.Analyzer" RuleNamespace="Unity.Serialization.Analyzer">
<Rule Id="UAC1005" Action="None" />
<Rule Id="UAC1015" Action="None" />
</Rules>
</RuleSet>
1 change: 1 addition & 0 deletions Project/Assets/csc.rsp
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
-warnaserror+
-warnaserror-:618
-nowarn:UAC1005
-nowarn:UAC1015
5 changes: 5 additions & 0 deletions com.unity.ml-agents/CHANGELOG.md
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Expand Up @@ -5,6 +5,11 @@ All notable changes to this package will be documented in this file.
The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
and this project adheres to
[Semantic Versioning](http://semver.org/spec/v2.0.0.html).

## Unreleased
#### com.unity.ml-agents (C#)
- Fix a crash that could occur when exiting playmode (#6296)

## [4.0.3] - 2026-04-17
### Minor Changes
#### com.unity.ml-agents (C#)
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4 changes: 4 additions & 0 deletions com.unity.ml-agents/Runtime/Academy.cs
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Expand Up @@ -277,6 +277,10 @@ void HandleOnPlayModeChanged(PlayModeStateChange state)
{
Dispose();
}
else if (state == PlayModeStateChange.ExitingPlayMode)
{
Dispose();
}
}

#endif
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